handwaves

Handwaves is the plural noun and third-person singular verb form of handwave.

As a noun, a handwave is a gesture of greeting or farewell, but more often it refers to a dismissive or evasive explanation that glosses over important details: The report handwaves away the budget shortfall with vague promises of future savings.

In technical and creative contexts, handwaving describes explaining something without rigorous proof or logic, relying on the audience to accept gaps in reasoning.